| 摘要 |
PURPOSE:To improve channel-selection precision by increasing the momentums of main and auxiliary cam plates by constituting a mechanism so that a memory pin comes in contact with the auxiliary cam plate first to make the main cam plate traverse and then meets the main cam plate. CONSTITUTION:With a channel selection member pushed, a collision pin collides against the right slanting part of auxiliary cam plate 11, which traverses alone to right by only l/2. At the same time, it also collides against right slanting part 11 of main cam plate 10, which traverses alone to the right, so that the collision pin will stay at the valley of cam plate 10. Therefore, cam plate 10 traverses a half desired extent away from the center position of the traverse width. Then, cam plates 10 and 11 collide with each other so that left slanting parts 11'' and 4'' will continue mutually. Next, as the collision pin pushes the channel selection member, it comes in contact with slanting part 11'' and cam 11 starts to traverse to left. Accordingly, cam plate 10 also traverses in one body and the collision pin slides on only slanting part 4''' and then stays at the valley of cam plate 10. Therefore, the cam plate traverses to the left by only p/2+l. |
